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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.257 ·

New gated experiment: tengu_stellar_drift

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A new capability flag can be forced on with an env var, with no stated effect.

TierNothing to try yethow much it should matter to you
Useful1my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaElsewherewhat it touches
KindIn Developmentin v2.1.257,
Nothing to try yet Notable No documentation found

A new capability flag can be forced on with an env var, with no stated effect.

A new internal capability flag, forceable via the CLAUDE_CODE_STELLAR_DRIFT env var or gated by an experiment named tengu_stellar_drift, has been added; its behavioral effect isn't documented here.

Read from
Names in the bundleCLAUDE_CODE_STELLAR_DRIFT
What has happened since
Flag reading moved The flag server now returns on for tengu_stellar_drift, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns off for tengu_stellar_drift, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.

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How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: CLAUDE_CODE_STELLAR_DRIFT

See this entry in the whole of v2.1.257 →

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